Mphamvu zamagetsi zochokera mthupi la munthu, chilengedwe komanso ngakhale zida zamagetsi zimatha kuwononga tinthu tating’onoting’ono tating’onoting’ono tating’onoting’ono, monga kulowa mkati mwazitsulo zosanjikiza mkati mwazinthu; Kuwonongeka kwa zipata za MOSFET ndi CMOS zigawo; Choyambitsa loko mu CMOS chipangizo; Kusiyanitsa kwakanthawi kochepa PN mphambano; Kukonda kwakanthawi kochepa kwa PN mphambano; Sungunulani waya wothandizira kapena waya wa aluminiyumu mkati mwa chida chogwirira ntchito. Pofuna kuthana ndi kusokonekera ndi kuwonongeka kwa ma electrostatic discharge (ESD) pazida zamagetsi, ndikofunikira kutenga njira zingapo zaluso kuti muteteze.

pa PCB bolodi Kapangidwe, ESD kukana kwa PCB kumatha kuzindikirika kudzera pakukhathamiritsa, kukonza bwino ndikuyika. Pakukonzekera, kusintha kwamapangidwe ambiri kumangokhala kungowonjezera kapena kuchotsa zigawozo mwa kuneneratu. Mwa kusintha mawonekedwe a PCB ndi zingwe, ESD imatha kupewedwa. Nazi njira zina zodzitetezera.

Momwe mungazindikire kukana kwa ESD kwa PCB

1. Gwiritsani ntchito PCB yamagulu angapo momwe mungathere. Poyerekeza ndi PCB yawiri, ndege yapansi ndi ndege yamagetsi, komanso kutalikirana kwapakati pakati pa waya wama waya ndi waya wapansi kumatha kuchepetsa kufalikira kwamachitidwe wamba komanso kulumikizana kophatikizira, ndikupangitsa kuti ifike ku 1/10 mpaka 1/100 ya awiri amaganiza PCB. Yesetsani kuyika chizindikiro chilichonse pafupi ndi mphamvu kapena pansi. Ma PCBS okhala ndi zinthu zazitali kwambiri pamwamba ndi pansi, zolumikizana kwambiri, ndikudzaza nthaka, lingalirani kugwiritsa ntchito mizere yamkati.

2.Pa PCB yapawiri, magetsi ndi ma gridi oyenera agwiritsidwe ntchito. Chingwe cha magetsi chili pafupi ndi nthaka ndipo chiyenera kulumikizidwa momwe zingathere pakati pa mizere yopingasa ndi yopingasa kapena malo odzaza. Kukula kwa gridi mbali imodzi kudzakhala kochepera kapena kofanana ndi 60mm, kapena ochepera 13mm ngati kungatheke.

3. Onetsetsani kuti dera lirilonse ndi lokwanira momwe zingathere.

4. Ikani zolumikizira zonse pambali momwe zingathere.

5. Ngati kuli kotheka, tsogolera chingwe cha magetsi kuchokera pakatikati pa khadi kutali ndi malo omwe ali pachiwopsezo chowongolera kuwonongeka kwa ESD.

6, pamagawo onse a PCB pansipa cholumikizira chomwe chimatulutsa mlanduwo (chosavuta kugundidwa ndi ESD), ikani chassis yayikulu kapena polygon yodzaza nthaka, ndi kuzilumikiza pamodzi ndi mabowo pakadutsa pafupifupi 13mm.

7. Ikani mabowo okwezeka m’mphepete mwa khadi, ndipo mapadi apamwamba ndi apansi otseguka amalumikizidwa pansi pa chasisi kuzungulira mabowo omwe akukwera.

8, msonkhano wa PCB, osagwiritsa ntchito solder iliyonse pamwamba kapena pansi. Gwiritsani ntchito zomangira ndi ma washer omangidwa kuti muphatikize mwamphamvu pakati pa PCB ndi chassis / chishango chachitsulo kapena chithandizo pansi.

9, pagawo lililonse pakati pa chassis ndi dera lozungulira, kuti akhazikitse “gawo lokhalokha” lomwelo; Ngati kuli kotheka, sungani malo pakati pa 0.64mm.

10, pamwamba ndi pansi pa khadi pafupi ndi malo oyikira, 100mm iliyonse pansi pa chassis ndi dera lozungulira lokhala ndi mzere wa 1.27mm mulifupi. Pafupi ndi malo olumikiziranawa, pedi kapena kabowo kokhazikitsira kamene kamaikidwa pakati pa chassis pansi ndi dera lozungulira. Maulalo apansiwa amatha kudula ndi tsamba kuti akhalebe otseguka, kapena kulumpha ndi maginito mikanda / ma frequency capacitors ambiri.

11, ngati bolodi la dera silingayikidwe mubokosi lazitsulo kapena chida chotetezera, pamwamba ndi pansi pa bolodi yoyendetsa waya yazitali sizingatetezedwe ndi solder kukana, kuti izitha kugwiritsidwa ntchito ngati ESD arc kuyika ma elekitirodi.

12. Ikani mphete mozungulira dera motere:

(1) Kuphatikiza pa cholumikizira chakumapeto ndi chassis, gawo lonse la mphete limafikira.

(2) Onetsetsani kuti m’lifupi mwake zigawo zonse ndizapamwamba kuposa 2.5mm.

(3) Mabowo amalumikizidwa mu mphete 13mm iliyonse.

(4) Lumikizani nthaka yozungulira ndi nthaka yofananira yamagawo angapo.

(5) Kwa mapanelo awiri omwe amaikidwa munthumba zachitsulo kapena zida zotetezera, nthaka ya mpheteyo izilumikizidwa kumalo omwe onsewa amakhala. Dera lokhala ndi mipanda iwiri osalumikizidwa liyenera kulumikizidwa ndi nthaka ya mpheteyo, nthaka ya mpheteyo siyiyenera kutenthedwa ndi kutuluka, kuti mpheteyo ikhale ngati ndodo yotulutsa ESD, osachepera 0.5mm mulifupi pamtunda zigawo), kuti tipewe kuzungulira kwakukulu. Kulumikizana kwama siginecha sikuyenera kukhala kochepera 0.5mm kutali ndi mpheteyo.

Kumalo omwe amatha kugunda mwachindunji ndi ESD, waya wapansi uyenera kuyikidwa pafupi ndi mzere uliwonse wazizindikiro.

14. Dera la I / O liyenera kukhala pafupi ndi cholumikizira momwe zingathere.

15. Dera lomwe limagwidwa ndi ESD liyenera kuyikidwa pafupi ndi pakati, kuti madera ena azitha kuwateteza.

16, yomwe nthawi zambiri imayika m’mizere yotsutsana ndi maginito kumapeto kolandila, ndipo kwa omwe amayendetsa chingwe omwe ali pachiwopsezo cha ESD, amathanso kulingalira zoyika ma resistor angapo kapena maginito mikanda kumapeto kwa driver.

17. Woteteza kwakanthawi nthawi zambiri amayikidwa kumapeto. Gwiritsani ntchito zingwe zazifupi (zosakwana 5x m’lifupi, makamaka ochepera 3x m’lifupi) kuti mugwirizane ndi chassis pansi. Chizindikiro ndi mizere yapansi yolumikizira iyenera kulumikizidwa mwachindunji ndi woteteza kwakanthawi isanafike nthawi yonse yolumikizira.

18. Ikani fyuluta yolumikizira cholumikizira kapena mkati mwa 25mm ya dera lolandila.

(1) Gwiritsani waya wachidule komanso wokulirapo kuti mugwirizane ndi chassis kapena dera lolandila (kutalika kosachepera kasanu m’lifupi, makamaka ochepera katatu m’lifupi).

(2) Mzere wazizindikiro ndi waya wapansi amalumikizidwa koyamba ndi capacitor kenako amalumikizidwa ndi dera lolandila.

19. Onetsetsani kuti mzere wazizindikiro ndi waufupi momwe ungathere.

20. Kutalika kwa zingwe zazizindikiro ndikoposa 300mm, chingwe cha pansi chimayenera kuyikidwa mofanana.

21. Onetsetsani kuti malo ozungulira pakati pa mzere wazizindikiro ndi kuzungulira komweku ndikochepa momwe zingathere. Pazingwe zazitali zazitali, malo amzere wazingwe ndi mzere wapansi ayenera kusinthidwa masentimita angapo kuti muchepetse malo ozungulira.

22. Kuyendetsa ma siginolo kuchokera pakatikati pa netiweki kukhala ma circuits angapo olandila.

23. Onetsetsani kuti malo ozungulira pakati pa magetsi ndi nthaka ndi ochepa momwe zingathere. Ikani ma frequency capacitor pafupi ndi pini yamagetsi iliyonse ya chip IC.

24. Ikani pafupipafupi modutsa pafupipafupi mkati mwa 80mm cholumikizira chilichonse.

25. Pomwe zingatheke, dzazani malo osagwiritsidwa ntchito ndi nthaka, kulumikiza zigawo zonse zazodzaza pamasamba 60mm.

26. Onetsetsani kuti nthaka yalumikizidwa kumapeto awiri oyang’anizana a nthaka iliyonse yodzaza nthaka (pafupifupi 25mm * 6mm).

27. Kutalika kwa kutseguka kwa magetsi kapena ndege yapansi kupitirira 8mm, polumikizani mbali zonse ziwiri zotseguka ndi mzere wopapatiza.

28.

29. Lumikizani maenje okwera ndi gawo lofananira, kapena patukani.

(1) Pamene bulaketi yachitsulo iyenera kugwiritsidwa ntchito ndi chitsulo kapena chassis yachitsulo, kukana zero ohm kuyenera kugwiritsidwa ntchito kuzindikira kulumikizana.

(2) kudziwa kukula kwa dzenje kukwaniritsa unsembe odalirika zitsulo kapena pulasitiki, pamwamba ndi pansi pa dzenje ogwiritsa ntchito timizere lalikulu, pansi PAD sangathe ntchito kamwazi kukana, ndi kuonetsetsa kuti pansi PAD sagwiritsa ntchito mawonekedwe owotcherera mawotchi.

30. Zingwe zotetezedwa ndi zingwe zosazitchinjiriza sizingakonzedwe chimodzimodzi.

Chisamaliro chapadera chiyenera kulipidwa ndi kulumikizana kwa kukonzanso, kusokoneza ndi kuwongolera mizere yolumikizira.

(1) Kugwiritsa ntchito kusefera kwapafupipafupi kuyenera kugwiritsidwa ntchito.

(2) Khalani kutali ndi madera olowetsera ndi kutulutsa.

(3) Khalani kutali ndi m’mphepete mwa bolodi.

32, PCB iyenera kuyikidwa mu chisilamu, osakhazikitsa pamalo otsegulira kapena mkati.

Samalani ndi kulumikizana kwa mzere wazizindikiro pansi pa maginito, pakati pa ziyangoyango ndipo mutha kulumikizana ndi maginitowo. Mikanda ina imayendetsa magetsi bwino ndipo imatha kupanga njira zosayembekezereka.

Ngati mulibe thumba kapena bokosilo loyika ma board angapo oyang’anira, liyenera kukhala lomvera kwambiri pakatikati yamagetsi yamagetsi pakati.